A radioactive substance has a half- life of four months. Three fourth of the substance would decay in
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Answer:
In 8 months.
Explanation:
half-life = 4 months.
half of substance decay in four months.
2/4 substance decay in four months and 2/4 remains.
In next four months, half of 2/4 means 1/4 remains and 3/4 decays.
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